Myrianthus arboreus is an indigenous African species of socio-economic importance, widely distributed in the South Sudanese part of Côte d’Ivoire. A good knowledge of its phenology could contribute to its conservation and sustainable management in the context of climate change. The objective of this study was to analyze some phenophases of Myrianthus arboreus from the localities of Abengourou, Adzopé, Daloa, Diabo and Zouan Hounien in order to consider its possible domestication. For better knowledge of flowering and fruiting leading to fruit maturation, 150 individuals aged at least 5 years were observed during 2018 and 2019. The results revealed that individuals from Diabo and Abengourou flowers from January to February. Those of Daloa, Adzopé and Zouan Hounien flower from January to March. The flowering percentage of male individuals ranges from 53 to 90 %, and that of females is 100 %. The maturation of the male inflorescence of individuals from Abengourou and Diabo lasts 15 ± 2 days while in Adzopé, Daloa and Zouan Hounien lasts 19 ± 2 days. Fruit setting lasts 85 ± 4 days in individuals from Adzopé, Daloa and Zouan Hounien while it lasts 54 ± 4 days in those from Abengourou and Diabo. In individuals from Adzopé and Zouan Hounien, fruiting lasts 170 ± 9 days while it varies between 112 and 142 ± 9 days in those from Abengourou, Daloa and Diabo. Fruit ripening lasts 86 ± 5 days in individuals from Abengourou, Adzopé and Zouan Hounien, on the other hand, it lasts 57 ± 4 days in those from Daloa and Diabo. These data provide an overview of the period, duration of flowering and fruiting of Myrianthus arboreus, for any hybridization tests.
